$(document).ready(function(){
	// Add minus icon for collapse element which is open by default
	$(".collapse.in").each(function(){
		$(this).siblings(".panel-heading").find(".glyphicon").addClass("rotate");
	});
	
	// Toggle plus minus icon on show hide of collapse element
	$(".collapse").on('show.bs.collapse', function(){
		$(this).parent().find(".glyphicon").addClass("rotate");

	}).on('hide.bs.collapse', function(){
		$(this).parent().find(".glyphicon").removeClass("rotate");
	});
});